CN102285059A - Molding method and mold used in resin transfer molding technology of cable rectifying cover - Google Patents
Molding method and mold used in resin transfer molding technology of cable rectifying cover Download PDFInfo
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- CN102285059A CN102285059A CN2011102475016A CN201110247501A CN102285059A CN 102285059 A CN102285059 A CN 102285059A CN 2011102475016 A CN2011102475016 A CN 2011102475016A CN 201110247501 A CN201110247501 A CN 201110247501A CN 102285059 A CN102285059 A CN 102285059A
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Abstract
The invention provides a molding method and a mold used in resin transfer molding technology of a cable rectifying cover. The molding method and the mold are used for integrally molding sheet metal parts and the heat-proof layer. The molding method comprises the steps of: mold treatment, precast of sheet metal parts, laying of fiber reinforcement, mold assembly, pipe connection, airtight inspection, resin heating, mold heating, pressure injection of resin, curing and demolding. The mold comprises a lower pressure plate (1), a male die (2), a female die (3), an upper pressure plate (4), seal rings (5), a resin impregnating connector (6), a small nut (7), a screw rod (8), a big nut (9) and a resin discharging connector (10), wherein the cavities of the female die (3) and the male die (2) are matched with the cable rectifying cover in shape; and the surfaces of the male die (2), the female die (3) and the lower pressure plate (1) contacted with the male die (2) are respectively provided with a rectangular seal groove used for installing the seal ring (5). By utilizing the molding method and the mold disclosed by the invention, the molding efficiency is high, and the quality is stable.
Description
Technical field
The present invention relates to a kind of technological forming method and mould of radome fairing, specifically, the present invention is a kind of resin moulded crimping and transfer processes forming method and mould of cable radome fairing.
Background technology
In space flight and aviation and some job that requires special skills field, because equipment working environment high temperature requirement, it is heat insulation that radome fairing is installed in the outside of cable so need leak electricity outside, because the cable radome fairing must satisfy certain resistance to compression, anti-deformation and the good requirement of following process, so general as shown in Figure 1 cable radome fairing is to be fixedlyed connected and got by the heat shield a on the metal metal plate spare b of bottom and top, heat shield is by resin moulded transmission method moulding by fibre reinforcement.
General cable radome fairing moulding technique has two kinds, a kind of forming method is to be heat shield with the resin moulded transfer molding of fibre reinforcement directly, adopt the mode of glueing joint that metal metal plate spare is fixedlyed connected with the heat shield of moulding then, but under hot conditions, glued joint easy unsticking, layering, so this method can not be connected metal metal plate spare with heat shield well, and complex procedures.
Another kind is by resin moulded crimping and transfer processes method global formation with metal metal plate spare and fibre reinforcement, promptly when shop layer directly with the correct position of built-in metal metal plate spare lay to the punch of mould, then with the fibre reinforcement lay to the die of mould, pass through resin moulded transfer molding behind the matched moulds, this forming method is not owing to locate in lay metal metal plate spare, make that the location is inaccurate between fibre reinforcement and the metal metal plate spare, easily form edge effect in the forming process, cause layering easily between the metal metal plate spare and heat shield after the moulding, the forming part uneven thickness.
Summary of the invention
The invention provides a kind of resin moulded crimping and transfer processes forming method and mould of cable radome fairing, can directly metal metal plate spare and heat shield be carried out global formation, and make and connect between them reliably, accurate positioning, cable radome fairing thickness is even, and problem such as poor glue, bubble, dry spot when having solved moulding, improved production efficiency.
Technical scheme of the present invention is as follows:
The resin moulded crimping and transfer processes mould of cable radome fairing, comprise lower platen 1, punch 2, die 3, top board 4, sealing ring 5, injecting glue joint 6, primary nut 7, screw rod 8, big nut 9, go out cemented joint 10, the profile of the die cavity of die 3 and punch 2 and cable radome fairing is complementary, can be directly with metal metal plate spare and heat shield straight forming one.
Connect the lower end of injecting glue joints 6 at die 3, the place, position, hole of corresponding metal metal plate spare is provided with spew groove 13 on top board 4 upper and lower pressing plates 1, and gum-injecting port 11 and gum outlet 12 are arranged on top board.On punch 2 and die 3, be provided with the connecting hole position that big nut 9, screw rod 8, primary nut 7 are installed, corresponding with metal metal plate spare.
In punch bottom along limit part, die bottom along being respectively equipped with the rectangular seal groove on limit part, lower platen and the punch contact-making surface, behind matched moulds, can play sealing function.
Earlier metal metal plate spare is embedded in the punch during use, with the fibre reinforcement lay to 3 li of the dies of mould, pass the connecting hole position of die 3 and punch 2 by big nut 9, primary nut 7 and screw rod 8, again punch 2, the die 3 that lumps together is placed on the lower platen 1, with injecting glue joint 6 with go out on the position, hole that cemented joint 10 is installed in the top board correspondence, clamp matched moulds at last.
The resin moulded crimping and transfer processes forming method of cable radome fairing comprises that mould is handled, metal metal plate spare is pre-buried, fibre reinforcement lay, mould assembling and connecting line, airtight inspection, resin heating, mold heated, resin vasopressing injection, cure and demold several steps, and concrete steps are
1. mould is handled: will place sand papering, polishing, the coating release agent of cut be arranged on the mould, purpose is to be beneficial to the demoulding, guarantees the molded article smooth surface.
2. metal metal plate spare is pre-buried: the paving of metal metal plate spare on punch, and is added glue and fixes.Avoid producing runner between metal metal plate spare and the mould, cause the appearance of problems such as poor glue, bubble, dry spot, effectively prevented the generation of channelling effect.
3. fibre reinforcement lay: the smooth lay of fibre reinforcement in die, will be guaranteed to fit with die cavity as far as possible when lay, guarantee smooth, wrinkle resistant, play not.The fibre reinforcement dimensional accuracy is controlled in the 0.1mm.At fibre reinforcement and place, cavity slit filler, avoid channelling effect then.
4. mould assembling, connecting line: prepare three circular seal rings, and it is bonded in the corresponding seal groove of die, lower platen, punch.Big nut, screw rod, primary nut are passed the installing hole of metal metal plate spare and fibre reinforcement, clamp matched moulds at last, guarantee that play does not take place in the position of fibre reinforcement, solved the inaccurate problem in location.
5. airtight inspection: after glue-feeder blocked, open the gum outlet valve and utilize vavuum pump to bleed, the final vacuum degree that stops to bleed remains unchanged.If vacuum can not keep, need find out the gas leakage position and seal.After glue-feeder was decontroled, gum outlet was bled, and vacuum should reduce.Guarantee the sealing of mould, in order to avoid gas enters die cavity in injection process.
6. resin heating: the consumption according to goods is poured resin into charging basket, utilizes RTM injector or Muffle furnace heating resin, is heated to 70 ℃～90 ℃, approximately about half an hour.Guarantee the flowing velocity in die cavity and the flow direction of resin, increased the resin permeability.
7. mold heated: test in vacuum and under the normal situation mould to be sent into baking oven and be heated to 80 ℃～100 ℃ insulations, mold temperature and resin temperature are consistent, and guarantee that resin enters the permeability that can not be subjected to the influence of mold temperature behind the die cavity and reduce resin.
8. resin vasopressing injection: at first start air compressor machine, open and add valve, the injection initial pressure is 0.05MPa～0.3MPa, after half an hour gradually intensified pressure be 0.3MPa～0.5MPa.
9. curing and demolding: mould pushes back the baking oven heating, and mold cools down is laid down clamping device to room temperature, the taking-up finished product.
The present invention has advantages such as production cost is low, production efficiency is high, manufacturability is reliable, changes traditional process, and stabilized product quality satisfies product high strength, low-density, endurance, and fail-safety is good, and structure can one-time formed requirement.
Description of drawings
Fig. 1 radome fairing schematic cross-section
Fig. 2 is the die side view
Fig. 3 mould assembling generalized section
The specific embodiment
The present invention is described further below by example, but it should be noted that, the purpose of publicizing and implementing example is to help further to understand the present invention, but it will be appreciated by those skilled in the art that: without departing from the spirit and scope of the invention and the appended claims, various substitutions and modifications all are possible.Therefore, the present invention should not be limited to the disclosed content of embodiment, and the scope of protection of present invention is as the criterion with the scope that claims define.
Example:
As shown in Figure 3, mould embodiment comprises lower platen 1, punch 2, die 3, top board 4, sealing ring 5, injecting glue joint 6, primary nut 7, screw rod 8, big nut 9, goes out cemented joint 10.
Connect the lower end of injecting glue joints 6 at die 3, the place, position, hole of corresponding metal metal plate spare is provided with spew groove 13 on top board 4 upper and lower pressing plates 1, along limit part, die 3 bottoms along the limit part, be respectively equipped with the rectangular seal groove on lower platen 1 and punch 2 contact-making surfaces, behind matched moulds, can play sealing function in punch 2 bottoms.Gum-injecting port 11 and gum outlet 12 are arranged on top board 4, and gum-injecting port 11 and gum outlet 12 can be used for vacuumizing equally.On punch 2 and die 3, be provided with the connecting hole position that big nut 9, screw rod 8, primary nut 7 are installed, corresponding with metal metal plate spare.
Earlier metal metal plate spare is embedded in 2 li of punch during use, with the fibre reinforcement lay to 3 li of the dies of mould, pass the connecting hole position of die 3 and punch 2 by big nut 9, primary nut 7 and screw rod 8, again punch 2, the die 3 that lumps together is placed on the lower platen 1, with injecting glue joint 6 with go out on the position, hole that cemented joint 10 is installed in top board 4 correspondences, clamp matched moulds at last.
The resin moulded crimping and transfer processes moulding concrete steps of cable radome fairing are:
1. will place sand papering, polishing, the coating release agent NC55 of cut be arranged on the mould.Purpose is to be beneficial to the demoulding, guarantees the molded article smooth surface.
With the paving of metal metal plate spare on punch 2, and fix with sulphurated siliastic.Avoid producing runner between metal metal plate spare and the mould, cause the appearance of problems such as poor glue, bubble, dry spot, effectively prevented channelling effect.
With the smooth lay of fibre reinforcement in die 3, when lay, to guarantee as far as possible to fit with die cavity, guarantee smooth, wrinkle resistant, play not.The fibre reinforcement dimensional accuracy is controlled at 0.08mm.Fill out sulphurated siliastic at fibre reinforcement and place, cavity slit then.
4. prepare three circular seal rings 5, and it is bonded in the corresponding seal groove of die 3, lower platen 1, punch 2.Big nut 9, screw rod 8, primary nut 7 are passed the installing hole of metal metal plate spare and fibre reinforcement, clamp matched moulds at last, guarantee that play does not take place in the position of fibre reinforcement, solved the inaccurate problem in location.
5. after the injecting glue joint 6 usefulness vacuum cements that will connect gum-injecting port 11 are blocked, open the gum outlet valve and utilize vavuum pump to bleed, the final vacuum degree that stops to bleed remains unchanged.If vacuum can not keep, need find out the gas leakage position and seal.After the injecting glue nipple orifice is decontroled, utilize the cemented joint 10 that goes out that connects gum outlet to bleed, vacuum should reduce.Guarantee the sealing of mould, in order to avoid gas enters die cavity in injection process.
6. pour resin into charging basket according to the consumption of goods, utilize RTM injector or Muffle furnace heating resin, be heated to 80 ℃, be about half an hour heat time heating time.Guarantee the flowing velocity in die cavity and the flow direction of resin, increased the resin permeability.
7. test in vacuum and under the normal situation mould is sent into baking oven and be heated to 80 ℃ of insulations, mold temperature and resin temperature are consistent, and guarantee that resin enters the permeability that can not be subjected to the influence of mold temperature behind the die cavity and reduce resin.
8. injection the time at first starts air compressor machine, open to add valve, the low 0.1MPa of injection initial pressure, after half an hour gradually intensified pressure to 0.3MPa.
9. mould pushes back the baking oven heating, and mold cools down is laid down clamping device to room temperature, takes out finished product.
Claims (7)
1. the invention provides a kind of resin moulded crimping and transfer processes forming method of cable radome fairing, may further comprise the steps;
First step mould is handled: will place sand papering, polishing, the coating release agent of cut be arranged on the mould;
The second single metal metal plate spare is pre-buried: the paving of metal metal plate spare on punch, and is added glue and fixes;
The 3rd step fibre reinforcement lay: in die, the fibre reinforcement dimensional accuracy is controlled in the 0.1mm with the smooth lay of fibre reinforcement, then at fibre reinforcement and place, cavity slit filler;
The 4th step mould assembling, connecting line: with three circular seal rings, be bonded in the corresponding seal groove of die, lower platen, punch, big nut, screw rod, primary nut are passed the installing hole of metal metal plate spare and fibre reinforcement, clamp matched moulds at last;
The 5th goes on foot airtight inspection: whether after glue-feeder is blocked, open the gum outlet valve and utilize vavuum pump to bleed, whether the back that stops to bleed is observed vacuum and is remained unchanged, and then glue-feeder is decontroled, and gum outlet is bled, observe vacuum and reduce;
The 6th step resin heating: pour resin into charging basket, utilize RTM injector or Muffle furnace heating resin, be heated to 70 ℃～90 ℃, heated 15-45 minute;
The 7th step mold heated: the mould that airproof is good is sent into baking oven and is heated to 80 ℃～100 ℃ insulations;
The 8th step resin vasopressing injection: at first start air compressor machine, open and add valve, the injection initial pressure is 0.05MPa～0.3MPa, after half an hour gradually intensified pressure be 0.3MPa～0.5MPa;
The 9th step curing and demolding: mould is pushed back the baking oven heating, and mold cools down is laid down clamping device to room temperature, takes out finished product.
2. the resin moulded crimping and transfer processes forming method of cable radome fairing as claimed in claim 1 is characterized in that the releasing agent name of product of selecting for use in the first step is NC55.
3. the resin moulded crimping and transfer processes forming method of cable radome fairing as claimed in claim 2 is characterized in that, second the step in select for use fixing be sulphurated siliastic with glue.
4. the resin moulded crimping and transfer processes forming method of cable radome fairing as claimed in claim 3 is characterized in that, the fibre reinforcement dimensional accuracy is controlled at 0.08mm in the 3rd step, and the glue that the slit, field is used is sulphurated siliastic.
5. the resin moulded crimping and transfer processes forming method of cable radome fairing as claimed in claim 4 is characterized in that, heating-up temperature is 80 ℃ in the 6th step, and be 30 minutes heat time heating time.
6. the resin moulded crimping and transfer processes forming method of cable radome fairing as claimed in claim 5 is characterized in that, in the 7th step mold heated to 80 degree is incubated.
7. the resin moulded crimping and transfer processes mould of a cable radome fairing, comprise lower platen (1), punch (2), die (3), top board (4), sealing ring (5), injecting glue joint (6), primary nut (7), screw rod (8), big nut (9), go out cemented joint (10), the die cavity of die (3) and punch (2) and the profile of cable radome fairing are complementary; The lower end, the upper and lower pressing plate of top board (4) (1) that connect injecting glue joint (6) at die (3) upward are provided with spew groove (13) in the place, position, hole of corresponding metal metal plate spare, gum-injecting port (11) and gum outlet (12) are arranged on top board, on punch (2) and die (3), be provided with the connecting hole position that big nut (9), screw rod (8), primary nut (7) are installed, in punch (2) bottom along limit part, die (3) bottom along the limit part, be respectively equipped with the rectangular seal groove that sealing ring (5) is installed on lower platen (1) and punch (2) contact-making surface; Lower platen (1), punch (2), die (3), top board (4), according to from bottom to up order by primary nut (7), screw rod (8), big nut (9), link together injecting glue joint (6) and go out cemented joint (10) and be inserted in gum-injecting port (11) and gum outlet (12) lining.
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| CN201110247501.6A CN102285059B (en) | 2011-08-26 | 2011-08-26 | Molding method and mold used in resin transfer molding technology of cable rectifying cover |
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| CN201110247501.6A CN102285059B (en) | 2011-08-26 | 2011-08-26 | Molding method and mold used in resin transfer molding technology of cable rectifying cover |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102529040A (en) * | 2012-02-27 | 2012-07-04 | 重庆海电风能科技有限公司 | Vacuum sealing mold of wind turbine nacelle cover |
| CN102922671A (en) * | 2012-11-13 | 2013-02-13 | 中国科学院宁波材料技术与工程研究所 | Resin transfer moulding mold and resin transfer moulding molding system |
| CN103904530A (en) * | 2014-03-06 | 2014-07-02 | 佛山市高明毅力温控器有限公司 | Manufacturing process for sealing structure of electric junction box |
| CN108673913A (en) * | 2018-05-21 | 2018-10-19 | 江苏亨睿碳纤维科技有限公司 | A kind of quickly porous compression manufacturing process |
| CN110524756A (en) * | 2019-08-07 | 2019-12-03 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Treadmill test part molding die, treadmill test part production method and treadmill test part |
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| CN111819058A (en) * | 2018-03-07 | 2020-10-23 | 住友电装株式会社 | Connector and method of manufacturing the same |
| CN112677517A (en) * | 2020-11-26 | 2021-04-20 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | RTM (resin transfer molding) forming die and method for embedded metal nut composite material box |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102529040A (en) * | 2012-02-27 | 2012-07-04 | 重庆海电风能科技有限公司 | Vacuum sealing mold of wind turbine nacelle cover |
| CN102922671A (en) * | 2012-11-13 | 2013-02-13 | 中国科学院宁波材料技术与工程研究所 | Resin transfer moulding mold and resin transfer moulding molding system |
| CN103904530A (en) * | 2014-03-06 | 2014-07-02 | 佛山市高明毅力温控器有限公司 | Manufacturing process for sealing structure of electric junction box |
| CN111819058A (en) * | 2018-03-07 | 2020-10-23 | 住友电装株式会社 | Connector and method of manufacturing the same |
| CN111819058B (en) * | 2018-03-07 | 2022-05-31 | 住友电装株式会社 | Connector and method of manufacturing the same |
| CN108673913A (en) * | 2018-05-21 | 2018-10-19 | 江苏亨睿碳纤维科技有限公司 | A kind of quickly porous compression manufacturing process |
| CN110524756A (en) * | 2019-08-07 | 2019-12-03 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Treadmill test part molding die, treadmill test part production method and treadmill test part |
| CN110948910A (en) * | 2019-12-11 | 2020-04-03 | 长春市佳运汽车零部件有限公司 | Multi-mold-core molding forming mold for vehicle battery bracket and forming method thereof |
| CN112677517A (en) * | 2020-11-26 | 2021-04-20 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | RTM (resin transfer molding) forming die and method for embedded metal nut composite material box |
| CN113054601A (en) * | 2021-03-16 | 2021-06-29 | 赣州奥鑫新型建材有限公司 | Combined cable pipe socket interface die |
| CN114131942A (en) * | 2021-11-23 | 2022-03-04 | 深圳市铭皓有机玻璃有限公司 | Manufacturing process and processing equipment of attractive acrylic plate |
| CN114131942B (en) * | 2021-11-23 | 2023-12-08 | 深圳市铭皓有机玻璃有限公司 | Manufacturing process and processing equipment of aesthetic acrylic plate |
| CN115534359A (en) * | 2022-11-25 | 2022-12-30 | 河北工业大学 | Hot-pressing RTM (resin transfer molding) in-situ composite forming process and equipment for fiber metal laminate |
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